rewarding section dopamine, which is about motivation, initiative energy, it boosts open yates ecstasy we all know that and connection, intimacies, this is a potent cocktail, obviously, so i am making a very obvious case if you understand these positive mood states for well that are connected with women knowing about their desire and pleasure and getting it, in in whether they are in a relationship or notice, gay straight, by seeks bisexual, liz bien, this explains why female sexualism has been targeted, it's a strength for women if they know about their bodies and responses. >> gavin: do you think part it have is you? >> thanks,. >> gavin: that it's not -- it's a compliment of sorts. you have had a prolific career in a very short period of time. two decades, this is your eighth book. and is it the fact that you are saying these things that drive people to their strong point of view or is that being said at all? >> i try never to speculate about people's motivation, publisher's weekly says it's the best science book of the fall.